With 20 bodies found so far and an additional 30 people still unaccounted for, that means the death toll is expected to be around 50. Authorities are telling the families of the missing to prepare for the worst.

" 'We informed them of the potential loss of their loved ones,' said Quebec police inspector Michel Forget, who came to [a Wednesday] afternoon news briefing from a meeting with families of the dead and unaccounted. 'You have to understand that it's a very emotional moment.' "

In Lac-Mégantic on Wednesday, "jeers and icy stares" greeted the head of the Montreal, Maine & Atlantic Railway, the Canadian Press reports. More than 70 tanker cars loaded with oil detached from an MM&A train parked outside Lac-Mégantic and then rolled into the town, derailed and exploded.

The railroad CEO, Edward Burkhardt, said there are questions about whether the engineer properly applied the brakes before leaving the parked train. "We think he applied some hand brakes, but the question is, did he apply enough of them?" Burkhardt said, according to Canadian Press. "He said he applied 11 hand brakes. We think that's not true. Initially we believed him, but now we don't."

As we reported Wednesday, authorities are looking into whether foul play or negligence played roles in the disaster.

"Not really, because my sadness is too high," Faucher said. "My sister left two sons. Their father died in October, so they're orphaned now. So I'm going to have to take care of them, so I'm going to have to be strong."

Lac-Mégantic is about 150 miles east of Montreal, near the border with Maine.